Cannibal received generally positive reviews from music critics. However, a common complaint amongst critics was the overuse of Auto-Tune, while the album's production was generally highlighted. The album's lyrics generally polarized music critics; some praised her boldness, while others criticized them as being too raunchy. In the United States, the EP reached a peak of fifteen selling 74,000 copies in its first week of release. In Canada, the album achieved similar success reaching a peak of fourteen on the chart. Cannibal was certified gold by the Recording Industry Association of America (RIAA) for shipment of 500,000 copies.
Two singles were released from the album. The lead single, "We R Who We R", was a worldwide success, reaching number one in the United States, the United Kingdom and Australia, and charting within the top ten in numerous other countries. In the United States, the song became the seventeenth song in the Billboard Hot 100's history to debut at number one. The album's second single, "Blow", was released on February 8, 2011. The song accomplished top ten positions in multiple countries including Australia, New Zealand and the United States.cover.
The album cover is much like the We R Who We R single. Cannibal peaked 77, We R Who We R peaked 1 for 1 week, Sleazy peaked 51, Blow peaked 7, Crazy Beautiful Life peaked 93.
|1.||"Cannibal"||Kesha Sebert, Joshua Coleman, Mathieu Jomphe, Pebe Sebert||Ammo, Billboard||3:14|
|2.||"We R Who We R"||K. Sebert, Lukasz Gottwald, Benjamin Levin, Coleman, Jacob Kasher Hindlin||Dr. Luke, Benny Blanco, Ammo||3:24|
|3.||"Sleazy"||K. Sebert, Gottwald, Levin, Shondrae Crawford, Klas Åhlund||Dr. Luke, Benny Blanco, Bangladesh||3:25|
|4.||"Blow"||K. Sebert, Gottwald, Levin, Åhlund, Max Martin, Allan Grigg||Dr. Luke, Benny Blanco, Kool Kojak, Max Martin||3:40|
|5.||"The Harold Song"||K. Sebert, Coleman||Ammo||3:58|
|6.||"Crazy Beautiful Life"||K. Sebert, Gottwald, Martin, P. Sebert||Dr. Luke||2:50|
|7.||"Grow a Pear"||K. Sebert, Gottwald, Levin, Martin||Dr. Luke, Benny Blanco, Max Martin||3:28|
|8.||"C U Next Tuesday"||K. Sebert, David Gamson, Marc Nelkin||David Gamson||3:45|
|9.||"Animal" (Billboard Remix)||K. Sebert, Gottwald, Greg Kurstin, P. Sebert||Billboard||4:15|
Tracklist adapted from the liner notes of Cannibal.